Kising quadrant foe mill



June 5, 1951 n. s. GEE 2,555,966

RISING QUADRANT FOR MILL SCREW DOWNS Filed April 4, 1950 2 Sheets-Sheefl Z 7 INVENTOR 4 DAVID $.GEE

ATTORNEY June 5, 1951 D. s. GEE 2,555,966

RISING QUADRANT FOR MILL SCREW DOWNS Filed April 4, 1950 2 Sheets-Sheet 2 FIG. 3.

INVENTOR' DAVID S; GEE

BY fimj Aa ATTORNEY Patented June 5, I951 HU-NITED STATES PATENT OFFICE- RISING QUADRANT FOR MILL SCREW-DOWNS David S. Gee, Gary, Ind. Application April 4, 1950, Serial No. 153,931

This invention relates to a rising quadrant for mill screw downs and particularly to a screw down in a merchant-mill. The screw is mounted in the housing cap withthe end thereof extending' above the cap. A wrench is used on the top of the screw for small adjustments in the gage between the rolls. In order to lock the wrench in adjusted position it was common practice to mount a quadrant rigidly on the roll housing. The periphery of the quadrant was provided with a plurality of holes and pins Were' inserted into the holes in the quadrant to lock the wrench in position. Since the wrench rose with the screw and the quadrant was stationary, the gap between the wrench and quadrant varied as the screw was raised and lowered. When the gap became wide, the pins tended to lean under pressure of the wrench so that the adjustment was not always accurate. Also, the quadrant interfered with the insertion and removal of the wedges used for major roll adjustments. This caused the quadrant to become bent and loosened so that it did not function properly.

It is therefore an object of my invention to provide a quadrant which will rise with the screw and which is readily removable.

This and other objects will be more apparent after referring to the following specification and attached drawings, in which:

Figure 1 is a side elevation of the rolling mill showing the device of my invention attached thereto;

Figure 2 is a top plan view of Figure 1; and

Figure 3 is an enlarged sectional view through the mill screw down taken at right angles to Figure 1.

Referring more particularly to the drawings, the reference numeral 2 indicates the housing in which the rolls 4 are mounted. The housing is provided with a cap 6 closing the top part thereof. At each end of the top roll 4 is an adjusting screw 8 which passes through a housing nut received in the bearing cap 6 (see Fig. 3). A bushing l2 rests on top of the housing cap 6 and surrounds the screw 8. A dirt cap l4 rests on top of the bushing l2. The structure so far de scribed is old.

According to my invention I provide a split collar I6 which is clamped to the screw 8 by means of a bolt l8. If desired, the collar l6 may be permanently attached to the screw 8, the only requirement being that the collar moves axially with the screw. A quadrant 20 is provided with a hub portion 22 rigidly attached thereto. If desired the hub 22 and quadrant 20 may be unitary.

4 Claims. (Cl. 80- -56) 2 v 1 The quadrant and hub are bored for a running fit on the shank 24 of the adjusting screw. The upper end of the screw 6 has a square portion 26 for receiving a wrench '28. The quadrant 20 and wrench 28 extend outwardly from the screw}! in the same general direction. The outer end of the quadrant 20 has a plurality of spaced apart holes 38 therein for receiving pins 32. Attached to and extending downwardly from the quadrant 25] is a guide member 34 whichhas its axis par-.-

allel to the axis of screw 8. A tubular support 35 is fastened to the housing cap 6 in any suitable manner and has its axis parallel to the axis of the screw 8. If desired, ribs 38 and may be provided to stiifen the connection between the quadrant 2i! and guide 34.

The operation of the device is as follows:

When it is desired to adjust the position of the top roll 4, the wrench 28 is turned in the desired direction to the desired position, after which a pair of pins 32 are placed in the holes 30 one on each side of the wrench 28, thus locking the wrench in adjusted position. As the screw moves upwardly the collar l6 causes the quadrant 20 also to move upwardly and as the screw moves downwardly the weight of the quadrant keeps it in contact with the collar Hi. The guide member 34 will slide in the tubular support 36, thus preventing binding of the quadrant 20 and permitting it to move readily in either direction. Therefore, the quadrant 20 and wrench 28 will always remain in the same relative position axially of screw 8. When it is desired to work on the top of the mill, the quadrant and wrench are easily removed so that they will not interfere with the accessibility of the mill.

While one embodiment of my invention. has been shown and described, it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

1. In a rolling mill having a housing and a roll adjustably mounted insaid housing by means of a vertical screw, the improvement comprising a quadrant, a hub portion on said quadrant surrounding the upper part of said screw and having a running fit therewith, means for supporting said hub for axial movement with said screw, a wrench attached to said screw above said hub for rotating said screw, said quadrant and said wrench extending outwardly from said screw in the same direction, a support fastened to said housing with its axis parallel to the axis of said screw, a guide member extending downwardly from said quadrant and having a sliding fit with said support, and means cooperatin with the outer end of said quadrant for locking the wrench in adjusted position.

2. Ina rollingmill having a housing and-a roll adjustably mounted in said housing by means of a vertical screw, the improvement comprising a quadrant, a hub portion on said quadrant surrounding the upper part of said screw and having a running fit therewith, means for supporting said hub for axial movement with said screw, a wrench attached to said screw above said hub for rotating said screw, said quadrant and said wrench extending outwardly from said screw in the same direction, a support fastened to said housing with its axis parallel to the axis of said screw, a guide member extending downwardly from said quadrant and having a sliding fit with said support, the outer end of said quadrant having a plurality of vertical holes therein around its periphery, and means cooperating with said holes for locking the wrench in adjusted position.

3. In a rolling mill having a housing and a roll adjustably mounted in said housing by means of a vertical screw, the improvement comprising a quadrant, a hub portion on said quadrant surrounding the upper part of said screw and having a running fit therewith, a collar on said screw adjacent to and below said hub portion, said collar being movable with said screw, a wrench attached to said screw" above said hub for rotating said screw, said quadrant and said wrench extending outwardly from said screw'in the same direction, a support fastened to said housing with its axis parallel to the axis of said screw, a guide member extending downwardly from said quadrant and having a slidin fit with said support, and means cooperating with the outer end of said quadrant for locking the wrench' in adjusted position. i

4. In a rolling mill having a housing and a roll adjustably mounted in said housing by means of a vertical screw, the improvement comprising a quadrant, a hub portion on said quadrant 'sur# rounding the upper part of said screw and having a running fit therewith, a collar on said screw. ad-

jacent to and below said hub portion, said collar being movable with said screw, a wrench attached to said screw above said hub for rotatingsaid screw, said quadrant and said wrench extending outwardly from said screw in the same direction,-

a tubular support fastened to said housing with its axis parallel to the axis of said screw, a guide,- member extending downwardly from said uad-.

rant into said tubular support, the outer end of said quadrant havin a plurality of vertical holes therein around its periphery, and means cooperating with said holes for locking the wrench in DAVID s. GEE.

No references cited. 

